Burner



Feb. 26, 1929.

G. S MORLEY BURNER Filed Dec. 2, `192'? 2 Sheets-Sheet Feb. 26, 1929.

G. s. MoBLr-:Y

BURNER Filed Dec. 2, 1927 2 Sheets-Sheet /wrf/Yrw? 5. .S Man 1/ y Arrw? Patented Feb. 26, 1929.

i UNITED STATES PATENT oFrlcE.

GUILFOBD S. MORLEY, OF UNIVERSITY CITY, MISSOURI, ASSIGNOR-TO MAJESTIC MANUFACTURING COMPANY, OF ST. LOUIS, MISSOURI,` A CORPORATION OF MIssoUBI.

BURNER.

Application filed December 2, Y1927. Serial No. 237,205.

This invention relates to burners, and is illustrated herein as embodied in a gas burner plicant, and assigned toV the assignee of the present invention. Y

A burner of the t-ype set forth in the Letters Patent referred to comprises a. plurality of concentrically arranged rings, or chambers, into which there is introduced an admixture of gas and primary air. The rings provided with a number of jets, and With openings for conducting secondary air into the center of flames burning at the various jets. To the end of obtaining a proper mixture of the secondary air wit-h the admixture in the burner, each jet is composed 0f a plurality of flame ports surrounding a central opening for admitting secondary air, and the ports are linclined in such a manner that the flame is concentrated at. a poi-nt above the central air opening. f

With the foregoing considerations in view, the present invention has for an important object thereof the provision of an improved burner which will operatev to secu-re amore thorough mixture of secondary air with a gaseous admiXture flowing from jets formed within the burner.

Y A feature of the invention which aims to.- wards the accomplishment of the recited object consists in forming a restriction in each of the central air openings, by means of which the passage of air through the opening and into the flame located thereabove will be acf celerated. In the illustrative embodiment of theinvention, the restriction is formed intermediately between the ends of each of the central air openings, and is of the same general forDmation as the restriction within a Venturi tu e.

Another object of the invention consists in providing a novel burner of the character specifiedconstructed in such a manner that the flames burning at the various jets will be of a substantially uniform intensity. A feature of the invention which lends itself to the attainment of this object consists in constructy ing each of the various burner rings in such a manner that the cross-sectional area of the ring tapers from the point at which gas 1s admitted to the ring, in a decreasing manner,`

to the closed end of the ring.

Fig. 2 is a sectional view in front elevation,

taken along the line 2 2 of Fig. 1

Fig. 3 is a view similar to Fig. 2 takenalong the line 3-3 of Fig. 1; and Y Fig. 4 is a perspective view showing the burnerhaving a cover plate mounted thereon.

As shown in the drawings, the reference numeral 10 indicates the outer ring, or chamber, of a gas burner and 12 the inner ring, or chamber, of the burner. been mixed with a supply of primary air is admitted to the outer ring 10 through a feed pipe 111, and to the inner ring 12 through a similar feed pipe 16. It isto be observed that the interior of the ring 10 is provided With a 'solid wall 18 (Fig. l) and that theouter ring is not in any way in communication with the -inner ring, each of the rings being provided with separate feed pipes and separate jets .for burning gas admitted through the pipes.

.It will be observed froman inspection of Figs. 1, 2 and 3 that, upon gas being admitted to the outer ring, it will tend to flow out of the burner through the first jet itreaches, and thus it will be appreciated that by the time the gas has passed completely through the outer ring to come up against the wall 18, the pressure of the gas will be substantially diminished, whereby the flames burning at the last jet inthe series will not be of nearly ,so great an intensity 4as the flame ,burning at the first of the jets. To the end of preventing this unequal burning action, and to render substantially uniform the intensities of all of the flames, the vouter ring is constructed in suchY a manner that it tapers from a substantially large cross-sectional area adjacent Gas which has previouslyV to the end of the feed pipe 14 to a small crossof the gas is accompanied by a proportionate x decrease in the cross-sectional area of the ring. Similarly, the cross-sectional area, or

the height, of the inner ring 12 may be decreased in a direction away from the point at which gas is admitted to the inner ring, to

accomplish the saine. result that is accomplished in the outer ring. Y Y

As illustrated, the gasl Jets are each composed of a plurality of burner ports 2O spaced l at equal intervalsfabout a central opening 22.V

The position of the burner ports with rela# tion to the central opening is best shown in Fig.`2 or" the drawings, and from an inspection of that figure it will be seen that each A ofthe air openings 22 is provided withva restricted portion 24 located intermediately lbetween the ends of the opening. Als will also be seen from that figure, the flame ports are inclined in such a manner'that flames Y burning at each of the ports are directed toward a common point located above the center of the air opening.

In the operation of the device, an adminture of gas and primary Van'l is admitted to the linner' and outer .rings of' the burner, from which -it passes through the flame ports 2O 'of the gas Jets and burns immediately above the central air openings 22. rIhe flame, in

'so burning, tends t-o create a vacuum just ing, therebyincreasing the air which is supplied to the flames. A s shown in t, a cover plate may be employed in connection with the improved burner. A suitable type of coverjplate coinprises,ras illustrated, atop portion 26 having an opening located above each of the burner Vjets, and a downwardly extending flange 28 adapted to be spaced from the Vouter wall of' the burner by means of'V lugs 30. Iii-the operation of the burner, when a cover plate `is mounted thereon, secondaryair is admitted not only through the central air opening, but

Abetween the burner rings.

also through the annular opening formed between the outer wall of the burner andthe flange 28, and through the annular opening This supplemental secondary air surrounds the outside f of the flame and tends further to secure ccmplete combustion of the gas. Y n

lllhile the invention has' been disclosed herein as embodied in aparticular type of gas burner, it is to be understood that the invention contemplates being embodiedin burners ofdiffferent types, as well as in burnersadapted to burn different fuel.

Having t-hus described the invention, what I claim as new and desire to secure byV Letters Patent of the VUnited States is:

`1l. A gas burner comprising a plurality of gas chambers, gas inlets communicating with the chambers,lair passageways extending through the chambers `and formed with restrictions between the opposite ends of the passageways to accelerate thepassage of air therethrough, and flame ports locatedL adjacent to the air passageways, the gas chainbers being of gradually decreasing cross-sectional areas in a direction away froin'the gas inlets whereby the pressure of gas at various points within the burner remains substantially uniform.-

2. A bur-ner comprising a gas chamber of gradually decreasing cross-sectional area and 'having a plurality of air openings formed therein, fiame ports surrounding the airopenings, restrictions located interine'diately beltween the lengths vof t-he openings to accelerate the passage of secondary -air to the interior of the flamesduring the operation of Vthe burner, and a cover plate adapted to be supported in spaced relation to the burner,

the cover plate being provided with openings which register with the air openings when the cover plate is properly positioned with rela- -tion vto the burner, and the cover plate form- `ing with Athe burner a conduit for the admis sion oftertiary air to the Vflame ports.

In testimony that 'I claim the foregoing I hereunto afiix my signature.

GUiLronn s. .Mo-nter. 

